jacobson



Reissued Feb; 7, 1922.

UNITED STATES PATENT OFFICE.

o. Iaconson, or CHICAGO, rumors AssIGNoa, IBY mnsrm assreimnnrs, TO 1 mamas s'rmu rauox comm, or CHICAGO, ILLINOIS, a coaromirronor 'nniawm FUEL-BURNING APPARATUS.

Specifieation of Reis'sued Lettere Patent. Reissued 7, 22,

Original application filed March 29,1920, Serial No. 369,800. Renewed May 9, 1921, Serial No. 468,046. Original No. 1,991,385, dated September 20, 1921. Application for reissue filed November 22, 1921.

Serial a. 517,089.

To all whom it may concern:

Be it known that I, ERA. C. Jaoonson, a citizen of the United States, and residing at 1414 Thorndale Avenue, Chicago, Cook provision of simple and efficient means for starting and controlling the burning of fuel for tubular boilers, and the like.

. A further object is the provision of Sim-- ple and efficient means for causing the fuel to automatically operate an electricalswitch member for closing first an ignition circuit and then a blowing circuit in fuel burning mechanism.

A still further object is the rovision of simple and eflicient means for rst igniting fuel and then blowingthe flame causedby the burning fuel. I

Other objects will appear hereinafter.

An embodiment ofmy invention is illustrated in the accompanying drawing, forming a part of this'specification, and in which Figure 1 is a side elevation of mechanism embodying my invention;

Figure 2 is' a top view partly in section and partly diagrammatical of fuel burning apparatus embodying my 'invention and Figure 3 is an enlarged fragmental section showing a! different form of by-pass mechanism usedin the construction.

Referring more particularly to the drawing, I have indicated a valve easing having a valve seat therein with a vale 6 mounted for cooperation with said seat 5. The valvecasing may-be provided with a suitable stuffing box 7 forpreventing the passage of fuel out around the stem 8 of the valve 6. Extending from the valve casingis a fuel pipe 8 adapted for connectionwith asourceof fuel under pressure, not shown.

[he stem 8 extends'into a housin 10 in which is mounted a diaphragm 11. esting against the diaphragm 11, at one side, is a 1 head 12 secured to the stem 8. At the other side of the diaphragm 11 connected in the housing 10 is a supply pipe 13 adapted to be connected with steam under pressure so that'steam coming through said pipe may press against the diaphragm 11.

' I preferably mount the stem 8 in an adjustable bearing 14 in the housin 10 with a .washer 15 on the inner end of t e adjusting member 14. Between the washer 15 and a portion of the head 12 is a coil spring 16. The spring presses the head 12 toward the diaphragm'and normally holds the valve 6 off its seat 5. When the steam pressure in pi e 13 exceeds the strength of spring 16 diap ragm' 11 will move the stem 8 and valve 6 to close said valve against its seat 5 and cut off the passage of fuel from pip; 9.

xtending from the valve casing is a pipe 17 which connects with acylinder head 18 so that fuel passing through valve seat 5 can pass on through pipe 17 to the interior of cylinder head 18.

- Attached to the cylinder head 18 is a cylinder 19 and at the other end of the f 21 uncovers the on 24. When the piston 21- has unoovere port 24 the fuel is free to pass to nozzle 26.

I find it advisable to rovide some form of by-pass in the cylin er 19 so that the .piston 21 can be returned to the position shown, after 'havin the spring 28. In small uncovered'port 24, by V ig. 2 I have shown a roove 29 as bein cut in the wall of the cy inder from a' point near the end of cylinder 19 in head 18 to a point near the exhaust port 24 sothat after fuel valve 6 is closed spring 28 can force the head 21 down to its position shown and the fuel becylinder 19 is a cylinder head 20. Distween the head 21 and valveb can pass out through the groove 29 into pipe and noz- I zle 26. Itwill be apparent that many forms of by-pass' arrangementsmay. be provided.

In Fig. 3. I have shown asmall perforation in the head 21 to permit the fuel trap ed betweenhead21 and valve 6', when the atter is closed, to pass out and permit spring 28 to 'move the head 21 to the position. 10. i i

shown; a

- I haveindicated the nozzle'26 as being mounted in a passage 27 leading from a blower'31 which may be of the centrifugal type having 1 an electric motor 32 connected directly to said blowen. Any other form' of blower may be substituted when so desired.

It Also, in the wall 27 ofthe mixing chamber I have indicated a spark plug 33 of conventional' construction mounted in a positionfto fire fuel blown from nozzle 26. y g

The motor 32 may be operated from an electric battery 34 havinga circuit 35 which includes said battery and motor. Also, in

thecircuit 35:are,two contacts'36 .and mountedon the piston rod. 22 is a switch member '37 mounted in a suitable manner with insulation 38 insulatingsaid member 37 from thepiston rod. A's the'piston rod 21 moves the circuit35 and causing the motor 32 to to uncover-port 24 contact member 37 asses between contact members 36, thereby c osing operate the blower 31.

An electrical vided. The primar circuit 39 of" the ignition circuit has one eg connected to battery 34 and the-other leg connected to acontact 40'on an insulated base 41' =uponwhich the;

contacts 36; are mounted. Also, on base etl is a contact member 40', and the contacts 40 and 40' are connected in circuit 39 so that as the switch member 37 moves toward contacts 36 it willpassbetween contacts tOand 40 causing a circuit to passthroughthe primary winding of an induction coil 42. The secondary winding 43 of the induction coil is connected to the spark plug33and a suitable part ofthe framework; such-asat 44, to the wall 27; M I

'When it is desired to start a would pass on to nozzle 26 and be sprayedin a veryfinevapor or spray intothe chamber inclosed by walls 27. As the piston 21 moves down toward port 24, the piston rod 22 moves switchumember 37 between pon tacts 40 and 40", closing circuit 39 andca-usingsparks in the spark plug33. The by-pass permits a smalltamount of fuel tobe passing to nozzle 26 as soon as or'short y after thepiston gnitlon circuit is also pro-' fire in; a de vice equipped with this improvement, ,fuel under considerable pressure is introduced through pipe 19 to valve dwhich normally would beopen, permitting'the fuel "to pass 1 on through pipe 17 and head 18; pressing'the piston 21 against theinfluence of spring- 28 "until port 24 was'uncovered whenthe fuel in said 21 starts inits movementtoward head20 and this fuel issues from nozzle26. The sparks reduced in. sparkplug'33 ignitesuch fuel. en thepiston 21 has traveled a suflicient distance the switch member 37 will pass from between contacts40 and 40 to a. position between contacts 36, thereby breaking the ignition circuit and closing the circuit 35 to the motor operating the blower 31. The device will then stay in this position until suflicient steampressure has been raised to operate the diaphragm 11 to overcome the strength of spring 16 and move valve 6 against its seat.

5 to close the passage of fuel from pipe 9. As soon as the pressure between valve 6 and piston'21 is reduced by closing valve 6; spring 28 begins to move the piston 21 toward the position shown and the fuel trapped between said piston 21 and valve 6 passes outthrough the by-pass and out of nozzle 26, permitting spring 28 to move the piston and-piston rod back to the position indicated in Fig. 2. As

soon as the pressure ofsteam in pipe 13 falls sufficiently, spring 16-will press the dia phragm outwardly and open the valve 6 again,fpermitting another cycle of movement,

such as just'described. Thus the. fire will be I automatically controlled to maintain a substantially even steam pressure in pipe 13 until the supply of fuel is cut off 'from pipe 9.

Having thus fully described my invention what I claim asnew and desire to secure by Letters Patent-is:- l g t 1. Fuel burning apparatus comprising ablower circuit; an igmtion;circuit; contacts in said circuits; a member; and a member operable by fuelunder pressure, connect'ed with'said switch member and adapted to move the latter from one of said contacts to the other. i

' 2.Fuel burning apparatus comprising a fuel valve; a fuel nozzle;ffuelwonducting means between said'va-lve and nozzle; a blower circuit;an ignition circuit, both of said circuits being normally open; and means operable by fuel in said fuel conducting.

means for closing said circuits, one .at a time. 3-Fue1 burnlng apparatus comprlsmg a blower circuit; an ignition c1rcu1t;-contacts in said circuit; a cylinder; a. piston'in said cylinder; a piston rod attached hose-id piston; a switch member on said piston rod; and means. for conducting fuel under pres sure to said vpiston for moving said switch member from the contact in one circuit to the conta-ctlin said other circuit.

4. Fuel burning apparatus comprising a" blower circuit;- an ignition circuit; contacts in said circuits; a cylinder; a piston insaid cylinder; a pistonrod attache to said pis-.

ton; a switch member on said piston rod;

means for conducting fuel under pressureto; 'said'Piston for moving said switch member;

from the contact in one circuit to the contact other circuit; and resilient means for moving said switch member from the lastmentioned contact member back to the firstmentioned contact member upon fuel being cut off from said piston. 5. Fuel burning apparatus comprising a fuel valve; a burner; a cylinder having s aced intake and exhaust ports therein with t e intake port in communication with said fuel valve and the exhaust port in communication with said burner; a piston in the cylinder; a spring normally holding the piston between said ports; and a bypass affording a communication in the cylinder from one side to the other of the piston.

6.. Fuel burning apparatus comprising a fuel valve; a cylinder having spaced-apart intake and exhaust ports therein with the intake port in communication with said fuel valve; a iston in the cylinder; a spring 20 normally olding the piston between said ports; a bypass affording a communication rom one side to the other of the piston in said cylinder; an ignition circuit; and. a

switch member operable by said piston for 26 opening and closing the ignition circuit.

7 Fuel burning apparatus comprising a cyllnder having an intake port at one end and an exhaust port intermediate its ends; a

piston in said cylinder; a spring tending 30 to hold said piston near the intake end of said cylinder; meansv for conducting fuel under pressure to said piston for moving the latter against said spring to uncover said exhaust port; an ignition circuit; a blower circuit; contacts in said ignition and blower circuits; and a switch member operable by said piston for moving said switch member from, one df said contact members to the other thereof.

8. Fuel burning apparatus comprising a fuel valve; :1. cylinder connected with said fuel valve and having an exhaust port therein; a piston insaid cylinder; a iston rod attached to said piston and extending axially from said cylinder; a plurality of electrical contacts adjacent the path of said piston rod; aswitch member carried by said piston rod and adapted to engage said contacts; blower c rcuit including certain of said con-L other ofsaid contacts; a spring tending to move said piston toward one end of said cylinder; means for closing said fuel valve; and bypass means permitting the fuel trapped between said plstonjand said fuel valve to pass by said piston to the exhaust port of said c linder. v

'9. uel burning apparatus comprisinga fuel valve; a stem on the fuel valve; a diaphragm at an end of the valve stem adapted to close said fuel valve; a spring tendlng to press said stem toward the diaphragm and hold the valve open; a cylinder connected with the valve and having an exhaust port BI intermediate its ends; a piston in the cylintacts; an ignition circuit including certain.

blower circuit; an ignition clrcuit; contacts in said circuit; a cylinder; a piston in said cylinder; a piston rod attached to said piston; a switch member on said piston rod; and means for conducting fuel'under pressure to said piston for moving said switch first to the contact in said ignition circuit and next to the contact in the blower, circuit.

'11. A liquid fuel burning apparatus, including a fuel spraying device together with means for initially supplying fuel to the apparatus in an atmosphere insufficient for complete combustion, and means responsive to the flow of fuel to the apparatus for initiating an air supply for more complete combustion, for the purpose set forth.

12. A liquid fuel burning apparatus, including an ignition device, a nozzle pointing towards said'ignition device, means for causing'the fuel to -fl0w through said nozzle to said ignition device and means dependent upon the fuel pressure supplied to the nozzle for initiating and producing an air blast directed towards the ignited fuelwhereby the ignition of the fuel takes place under condi- 1 tions of an insufiicient supply ofair for complete combustion. v I

13. A liquid fuel burning apparatus, including an ignition device, a nozzle pointing towards said ignition device, means for 1 causing the fuel to flow through said nozzle to said ignition device, means for supplying air to the ignited fuelto complete combustion, and means dependent upon the fuel pressure supplied to said nozzle for initiat- 11 ing the operation of the said air supply means whereby the ignition of the fuel takes place under conditions of an insufficient supply of air for complete combustion.

14. A liquid fuel burning apparatus comprising a closed chamber, a fuel supply device adapted to supply fuel under pressure to said closed chamber, means for supplying fuel under pressure to the supply device, means for initially igniting the supplied fuel, and means dependent upon the pressure of the fuel supplied to the supply device forv supplying an air blast into the inclosed chamber and to the ignited fuel for complete combustion, whereby the ignition of the fuel takes place under conditions of an insufficient supply of air for complete combustion. a

15. A liquid fuel burning apparatus comprising a conduit, a fuel nozzle dlsposed axll.

prising a conduit, a blower for supplying,

ially therein and adapted tosupply a stream of fuel under pressure in the direction of the conduit, a valve or control device for supplyingfuel under pressure to said nozzle, an ignition device disposed in said conduit and in. a position to ignite the fuel issuing from said nozzle and a blower dependent in its operation upon the pressure of the fuel supplied to the'nozzle for supplying an air blast into the conduit and to the ignited fuel for complete combustion, whereby the ignition of the fuel takes place under conditions of an insuflicient supply of. air for complete combustion and the air for complete combustion is subsequently supplied thereto.

16. A liquld fuel burning apparatus comsaid conduit with ablast of air and an electric motor for drivingsaid blower, a circuit for said-motor, afuel nozzle disposed in the conduit and having its nozzle pointingin the direction of drafts-an ignition device disposed inthe conduit and substantially in a position Where it is impinged by the fuel issuing from thenozzle,- a control device for supplying fuel under pressure to said nozzle and an electric controller actuated by the ressureOf the fuel supplied to the nozzle or closing the motor circuit, subsequent to the supply of fuel tot-he nozzle.

In testimony whereof I have signed my name to this specification.

ERA o. JACOB'SON. 

